温室作物需水信息指标及湿度控制策略研究进展  

Advances in Information Indicators of Water Requirement and Humidity Control Strategy for Greenhouse Crops

作　　者：伍德林[1] 毛罕平[1] 

机构地区：[1]江苏大学江苏省现代农业装备与技术重点实验室

出　　处：《中国农村水利水电》2007年第1期35-40,共6页China Rural Water and Hydropower

基　　金：高等学校博士学科点专项科研基金(20040299004);江苏大学博士创新基金资助。

摘　　要：在温室土壤-作物-环境连续体中,作物水分损耗、吸收和水分利用一直是研究的热点。在温室内,作物精量灌溉必须要考虑何时灌和灌多少两个方面的问题。从冠层蒸腾速率、茎流、水势、叶温和作物水分胁迫系数、茎秆果的直径微变化、根源信号、作物生长器官的电特性及图像特征技术方面,回顾和评价了作物水分状况诊断方法中作物需水信息指标的研究进展及存在的问题。同时,为防止过量灌溉带来的高湿矛盾,讨论了温室湿度控制的不同策略,以指导灌溉。最后,初步提出了进一步研究的建议。In soil crop-environment continuum of greenhouse, water loss and uptake and th6 efficiency of water use by crops have been the topics of many studies, reports and reviews. The ＂proper time＂ and ＂adequate quantity＂ in greenhouse should be considered for crop precision irrigation. This paper reviewed and evaluated advances and problems in information indicators of water requirement of crop water status diagnosis methods from the aspects such as transpiration rate of canopy, stem sap flow, water potential, leaf temperature and crop water stress index （CWSI）, shrinking or swelling of stems or fruits, root sourced signal, physiological dielectric characteristics, image processing and spectrum technology. At the same time, the strategies of humidity control in greenhouse environment were discussed to guide for irrigation to avoid high humidity status suffering from the excessive water content of irrigation. Furthermore, the trend of research and development in the field in the future was prospected preliminarily.

关 键 词：温室 指标 水分诊断 湿度控制 

分 类 号：S274[农业科学—农业水土工程]